usb_driver_set_configuration
usb_driver_set_configuration(udev, 1);
EXPORT_SYMBOL_GPL(usb_driver_set_configuration);
status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
extern int usb_driver_set_configuration(struct usb_device *udev, int config);
err = usb_driver_set_configuration(dev, 2);